Glass fiber reinforced polymer (GFRP) rebar has been used to replace steel reinforcement in bridge deck structures in many countries for the purpose of improving the durability of the works. In Vietnam, there are currently no standards applicable to bridge structures in general and bridge decks in particular using GFRP bars. This paper presents the analysis and evaluation results of punching shear resistance prediction models of GFRP reinforced concrete bridge deck, based on the data of 34 deck slabs from previous studies and 09 deck slabs experimented by the author. In addition, using the nonlinear regression analysis method, an adjusted model has been proposed for the prediction results that are consistent with the experimental results.

Keywords: GFRP bar; bridge deck; flexural behaviors; punching shear resistance.